Alert archive / Pennsylvania / Flash Flood Warnings in 1994
Flash Flood Warning 13, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Feb 23, 1994, 9:54 AM EST for Greene County, Pennsylvania. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Feb 23, 1994, 9:54 AM EST (14:54 UTC)
- Expired
- Feb 23, 1994, 4:00 PM EST
- In force
- 6 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Greene County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 2.9 hours before the alert went out and 63 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 480 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 712 m²/s²
- 0-3 km storm-relative helicity
- 923 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 231453 FFWPIT PAC059-232100- BULLETIN - EBS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 954 AM EST WED FEB 23 1994 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 400 PM EST FOR THE FOLLOWING LOCATION... IN WEST PENNSYLVANIA ...GREENE COUNTY THE SOUTH FORK OF TEN MILE CREEK IS BEGINNING TO COME OUT OF ITS BANKS NEAR THE INTERSECTION OF ROUTE 21 AND 18 NEAR WEST WAYNESBURG. WATER IS NOT ON THE ROAD YET...BUT THE CREEK CONTINUES TO RISE. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Feb 23, 4:45 AM EST, 5 hours 9 minutes before
PAZ001>036-WVZ001>004-240300- WINTER STORM WARNING CONTINUES NATIONAL WEATHER SERVICE PITTSBURGH PA 445 AM EST WED FEB 23 1994 A WINTER STORM WARNING REMAINS IN EFFECT TODAY FOR MUCH OF NORTHWEST PENNSYLVANIA...THE LAUREL MOUNTAINS AND THE SOUTH CENTRAL AREA. THE FOLLOWING COUNTIES ARE IN THE WARNING AREA THROUGH TODAY... THE FOLLOWING COUNTIES ARE IN THE WARNING AREA THIS MORNING... MERCER LAWRENCE BUTLER ARMSTRONG AND INDIANA. AND THROUGHOUT THE DAY IN THE FOLLOWING COUNTIES... CLARION CRAWFORD VENANGO WARREN ERIE FOREST JEFFERSON...IN THE LAUREL MOUNTAINS...CAMBRIA AND SOMERSET...AND IN THE SOUTH CENTRAL AREA...BLAIR BEDFORD HUNTINGDON MIFFLIN JUNIATA FULTON AND FRANKLIN. NORTHWEST PENNSYLVANIA COUNTIES CAN EXPECT FROM 3 TO 6 INCHES OF SNOW AND SLEET THIS MORNING WITH A CHANGE OVER TO SLEET AND FREEZING RAIN AND FINALLY RAIN BY LATE AFTERNOON. IN THE LAUREL MOUNTAINS 4 TO 6 INCHES OF SNOW CAN BE EXPECTED WITH A CHANGEOVER TO RAIN BY EVENING. DANGEROUS ICE ACCUMULATIONS FROM THE FREEZING RAIN WILL OCCUR WITH DOWNED TREES AND POWERLINES LIKELY. WINDY CONDITIONS IN THE HIGHER ELEVATIONS OF THE LAUREL MOUNTAINS COMBINED WITH THE FREEZING RAIN COULD ALSO BRING DOWN TREES AND POWERLINES. THE SOUTH CENTRAL AREA...INCLUDING ALTOONA BEDFORD AND CHAMBERSBURG WILL HAVE 4 TO 6 INCHES OF SNOW WITH A CHANGEOVER TO SLEET AND FREEZING RAIN AND FINALLY RAIN TOWARD EVENING. ICE ACCUMULATIONS IN THIS AREA COULD BE ESPECIALLY HEAVY DUE TO THE PROLONGED PERIOD OF SNOW AND ACCUMULATING ICE. THE FOLLOWING COUNTIES ARE IN A WINTER STORM WARNING TODAY THROUGH TONIGHT... MCKEAN POTTER ELK CAMERON NORTHERN CLINTON CLEARFIELD AND CENTRE SNOW WILL ACCUMULATE 4 TO 8 INCHES BEFORE MIXING WITH SLEET AND FREEZING RAIN. THIS MIXED PRECIPITATION WILL CONTINUE INTO TONIGHT BEFORE CHANGING BACK TO SNOW SHOWERS BY EARLY MORNING. FINALLY...A WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR PORTIONS OF SOUTHWESTERN PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA EARLY THIS MORNING. THE COUNTIES IN THE ADVISORY ARE... ALLEGHENY BEAVER FAYETTE GREENE WASHINGTON WESTMORELAND AND IN THE NORTHERN PANHANDLE OF WEST VIRGINIA... BROOKE...HANCOCK...MARSHALL AND OHIO. A MIXTURE OF SNOW AND SLEET HAS CHANGED OVER TO ALL RAIN DURING THE NIGHT. THIS WILL LEAVE A SLUSHY ACCUMULATION WHICH COULD CAUSE SLIPPERY CONDITIONS FOR THE MORNING COMMUTE TO WORK. COLDER LOW-LYING AREAS AS WELL AS OVERPASSES COULD STILL BE ICE COVERED FOR THIS MORNINGS RUSH. WHERE THE PRECIPITATION CHANGES OVER TO RAIN IT COULD BE HEAVY AT TIMES DURING THE REMAINDER OF THE DAY. THIS COULD CAUSE SMALL STREAM AND CREEK FLOODING. THERE IS ALSO A POSSIBILITY OF A THUNDERSTORM. A STORM MOVING THROUGH THE OHIO VALLEY IS PULLING WARMER AIR INTO EXTREME WESTERN PENNSYLVANIA BRINGING THIS ROUND OF MIXED PRECIPITATION. IN SOUTHWEST PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA MIXED PRECIPITATION HAS MOSTLY CHANGED OVER TO ALL RAIN. IN THE NORTHERN MOUNTAINS OF WESTERN PENNSYLVANIA AS WELL AS THE CENTRAL AND LAUREL MOUNTAINS COLD AIR WILL REMAIN IN PLACE THE LONGEST MAKING FOR A PROLONGED PERIOD OF ACCUMULATING SNOW...SLEET...AND FREEZING RAIN.
Special weather statement, Feb 23, 4:48 AM EST, 5 hours 6 minutes before
PAZ001>036-WVZ001>004-240300- WINTER STORM WARNING CONTINUES NATIONAL WEATHER SERVICE PITTSBURGH PA 445 AM EST WED FEB 23 1994 A WINTER STORM WARNING REMAINS IN EFFECT TODAY FOR MUCH OF NORTHWEST PENNSYLVANIA...THE LAUREL MOUNTAINS AND THE SOUTH CENTRAL AREA. THE FOLLOWING COUNTIES ARE IN THE WARNING AREA THROUGH TODAY... THE FOLLOWING COUNTIES ARE IN THE WARNING AREA THIS MORNING... MERCER LAWRENCE BUTLER ARMSTRONG AND INDIANA. AND THROUGHOUT THE DAY IN THE FOLLOWING COUNTIES... CLARION CRAWFORD VENANGO WARREN ERIE FOREST JEFFERSON...IN THE LAUREL MOUNTAINS...CAMBRIA AND SOMERSET...AND IN THE SOUTH CENTRAL AREA...BLAIR BEDFORD HUNTINGDON MIFFLIN JUNIATA FULTON AND FRANKLIN. NORTHWEST PENNSYLVANIA COUNTIES CAN EXPECT FROM 3 TO 6 INCHES OF SNOW AND SLEET THIS MORNING WITH A CHANGE OVER TO SLEET AND FREEZING RAIN AND FINALLY RAIN BY LATE AFTERNOON. IN THE LAUREL MOUNTAINS 4 TO 6 INCHES OF SNOW CAN BE EXPECTED WITH A CHANGEOVER TO RAIN BY EVENING. DANGEROUS ICE ACCUMULATIONS FROM THE FREEZING RAIN WILL OCCUR WITH DOWNED TREES AND POWERLINES LIKELY. WINDY CONDITIONS IN THE HIGHER ELEVATIONS OF THE LAUREL MOUNTAINS COMBINED WITH THE FREEZING RAIN COULD ALSO BRING DOWN TREES AND POWERLINES. THE SOUTH CENTRAL AREA...INCLUDING ALTOONA BEDFORD AND CHAMBERSBURG WILL HAVE 4 TO 6 INCHES OF SNOW WITH A CHANGEOVER TO SLEET AND FREEZING RAIN AND FINALLY RAIN TOWARD EVENING. ICE ACCUMULATIONS IN THIS AREA COULD BE ESPECIALLY HEAVY DUE TO THE PROLONGED PERIOD OF SNOW AND ACCUMULATING ICE. THE FOLLOWING COUNTIES ARE IN A WINTER STORM WARNING TODAY THROUGH TONIGHT... MCKEAN POTTER ELK CAMERON NORTHERN CLINTON CLEARFIELD AND CENTRE SNOW WILL ACCUMULATE 4 TO 8 INCHES BEFORE MIXING WITH SLEET AND FREEZING RAIN. THIS MIXED PRECIPITATION WILL CONTINUE INTO TONIGHT BEFORE CHANGING BACK TO SNOW SHOWERS BY EARLY MORNING. FINALLY...A WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR PORTIONS OF SOUTHWESTERN PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA EARLY THIS MORNING. THE COUNTIES IN THE ADVISORY ARE... ALLEGHENY BEAVER FAYETTE GREENE WASHINGTON WESTMORELAND AND IN THE NORTHERN PANHANDLE OF WEST VIRGINIA... BROOKE...HANCOCK...MARSHALL AND OHIO. A MIXTURE OF SNOW AND SLEET HAS CHANGED OVER TO ALL RAIN DURING THE NIGHT. THIS WILL LEAVE A SLUSHY ACCUMULATION WHICH COULD CAUSE SLIPPERY CONDITIONS FOR THE MORNING COMMUTE TO WORK. COLDER LOW-LYING AREAS AS WELL AS OVERPASSES COULD STILL BE ICE COVERED FOR THIS MORNINGS RUSH. WHERE THE PRECIPITATION CHANGES OVER TO RAIN IT COULD BE HEAVY AT TIMES DURING THE REMAINDER OF THE DAY. THIS COULD CAUSE SMALL STREAM AND CREEK FLOODING. THERE IS ALSO A POSSIBILITY OF A THUNDERSTORM. A STORM MOVING THROUGH THE OHIO VALLEY IS PULLING WARMER AIR INTO EXTREME WESTERN PENNSYLVANIA BRINGING THIS ROUND OF MIXED PRECIPITATION. IN SOUTHWEST PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA MIXED PRECIPITATION HAS MOSTLY CHANGED OVER TO ALL RAIN. IN THE NORTHERN MOUNTAINS OF WESTERN PENNSYLVANIA AS WELL AS THE CENTRAL AND LAUREL MOUNTAINS COLD AIR WILL REMAIN IN PLACE THE LONGEST MAKING FOR A PROLONGED PERIOD OF ACCUMULATING SNOW...SLEET...AND FREEZING RAIN.
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 23, 5:57 PM EST | Severe Thunderstorm Warning | PBZ | Beaver | 63 min |
| Feb 23, 6:17 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 58 min |
Nearby
Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.